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[MSP430] Fix data layout string.

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Summary:
Without this patch some types have incorrect size and/or alignment
according to the MSP430 EABI.

Reviewers: asl, awygle

Reviewed By: asl

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D34561

llvm-svn: 306159
This commit is contained in:
Vadzim Dambrouski 2017-06-23 21:11:45 +00:00
parent 3cbf4263b2
commit 30cbe58e68
3 changed files with 64 additions and 3 deletions
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8
lib/Target/MSP430/MSP430TargetMachine.cpp
View File

@ -32,16 +32,20 @@ static Reloc::Model getEffectiveRelocModel(Optional<Reloc::Model> RM) {
return *RM;
}
static std::string computeDataLayout(const Triple &TT, StringRef CPU,
const TargetOptions &Options) {
return "e-m:e-p:16:16-i32:16-i64:16-f32:16-f64:16-a:8-n8:16-S16";
}
MSP430TargetMachine::MSP430TargetMachine(const Target &T, const Triple &TT,
StringRef CPU, StringRef FS,
const TargetOptions &Options,
Optional<Reloc::Model> RM,
CodeModel::Model CM,
CodeGenOpt::Level OL)
: LLVMTargetMachine(T, "e-m:e-p:16:16-i32:16:32-a:16-n8:16", TT, CPU, FS,
: LLVMTargetMachine(T, computeDataLayout(TT, CPU, Options), TT, CPU, FS,
Options, getEffectiveRelocModel(RM), CM, OL),
TLOF(make_unique<TargetLoweringObjectFileELF>()),
// FIXME: Check DataLayout string.
Subtarget(TT, CPU, FS, *this) {
initAsmInfo();
}

2
test/CodeGen/MSP430/Inst16mm.ll
View File

@ -64,6 +64,6 @@ entry:
%0 = load i16, i16* %retval ; <i16> [#uses=1]
ret i16 %0
; CHECK-LABEL: mov2:
; CHECK: mov.w 2(r1), 6(r1)
; CHECK: mov.w 0(r1), 4(r1)
; CHECK: mov.w 2(r1), 6(r1)
}

57
test/CodeGen/MSP430/struct_layout.ll Normal file
View File

@ -0,0 +1,57 @@
; RUN: llc < %s | FileCheck %s
target triple = "msp430"
%struct.X = type { i8 }
; CHECK-LABEL: @foo
; CHECK: sub.w #4, r1
; CHECK: mov.b #1, 3(r1)
define void @foo() {
%1 = alloca %struct.X
%2 = alloca %struct.X
%3 = alloca %struct.X
%4 = getelementptr inbounds %struct.X, %struct.X* %1, i32 0, i32 0
store i8 1, i8* %4
%5 = getelementptr inbounds %struct.X, %struct.X* %2, i32 0, i32 0
store i8 1, i8* %5
%6 = getelementptr inbounds %struct.X, %struct.X* %3, i32 0, i32 0
store i8 1, i8* %6
ret void
}
; CHECK-LABEL: @bar
; CHECK: sub.w #4, r1
; CHECK: mov.b #1, 3(r1)
define void @bar() {
%1 = alloca [3 x %struct.X]
%2 = getelementptr inbounds [3 x %struct.X], [3 x %struct.X]* %1, i16 0, i16 0
%3 = getelementptr inbounds %struct.X, %struct.X* %2, i32 0, i32 0
store i8 1, i8* %3
%4 = getelementptr inbounds [3 x %struct.X], [3 x %struct.X]* %1, i16 0, i16 1
%5 = getelementptr inbounds %struct.X, %struct.X* %4, i32 0, i32 0
store i8 1, i8* %5
%6 = getelementptr inbounds [3 x %struct.X], [3 x %struct.X]* %1, i16 0, i16 2
%7 = getelementptr inbounds %struct.X, %struct.X* %6, i32 0, i32 0
store i8 1, i8* %7
ret void
}
%struct.Y = type { i8, i16 }
; CHECK-LABEL: @baz
; CHECK: sub.w #8, r1
; CHECK: mov.w #2, 6(r1)
define void @baz() {
%1 = alloca %struct.Y, align 2
%2 = alloca %struct.Y, align 2
%3 = getelementptr inbounds %struct.Y, %struct.Y* %1, i32 0, i32 0
store i8 1, i8* %3, align 2
%4 = getelementptr inbounds %struct.Y, %struct.Y* %1, i32 0, i32 1
store i16 2, i16* %4, align 2
%5 = getelementptr inbounds %struct.Y, %struct.Y* %2, i32 0, i32 0
store i8 1, i8* %5, align 2
%6 = getelementptr inbounds %struct.Y, %struct.Y* %2, i32 0, i32 1
store i16 2, i16* %6, align 2
ret void
}